Send a Message
to Nacho Man

Comments

206

Joined

Jun 30, 2008

Nacho Man Profile

Forums Owned

Recent Posts

Geology

Ice shelves disappearing on Antarctic Peninsula

What utter twattle. Clueless is too kind. Absolutely no science background, no understanding... an complete embarrassment to intelligent Christians.  (Mar 5, 2010 | post #2)

Geology

Are the earthquakes in Chile, Haiti, Taiwan and Japan rel...

<<If I were living in California, I would be making plans to move out the state. California may sink this year.>> Utter non-sense. California is moving north not up, down, or out.  (Mar 5, 2010 | post #16)

Geology

Are the earthquakes in Chile, Haiti, Taiwan and Japan rel...

Yep. All related... but only by the fact that they are on subduction zones on this planet. No need to invoke the Flying Spaghetti Monster.  (Mar 4, 2010 | post #10)

Geology

Arctic reverses trend, is warmest in two millennia

So why is the temperature in spaceso low??? Gee, might it just be that it is a vacuum? No molecules, no vibration or collisions. No vibration or collisions, no temperature. Come on. No matter what "side" you are on. Get a bit of science training.  (Sep 4, 2009 | post #14)

Geology

Could Barnett Shale drilling be cause for Texas earthquakes?

Shale gas is entirely different from conventional buoyancy related trapping. There is no "replacement " of gas in the system as the nanopermeability does not allow flow of any fluid very far very fast. Without fracturing, it takes thousands of years to move a molecule of gas or water through the shale. Gas is not replaced by anything. The water that is injected in the frac is immediately withdrawn and while the sand is extra material, it hold the fractures open. The gas that is produced is replaced by nothing. The pressure of the reservoir is reduced and the gas in place expands. Sorbed gas components are freed and gas produces to the surface through the well bore. The whole premise of unconventional gas is that it does not require the a water drive mechanism. Even if it did, there are no domino effect that would be felt tens of miles deeper. The gas production elements described well by other posters apply to conventional reservoirs and not shale gas reservoirs. The entire Gulf coast is fault ridden. The weight of the sediments have been causing and moving growth faults for undreds of millions of years. The N. Texas earthquakes are related to something other than the relatively shallow shale gas drilling.  (Aug 11, 2009 | post #8)

Geology

Could Barnett Shale drilling be cause for Texas earthquakes?

The gas is in Shale in two ways... - it is in the micropores, the very small void spaces within the shale, - it is adsorbed or absorbed on to the organic bits in the shale. The big problem with Shale, unlike many sandstones, is that the porosity (the little void spaces) aren't connected well at all to each other. That means that even if you drilled into the rock, little gas would normally flow. So what they do is run in with fluid or sometimes a gas and pump it into the rock under extremely high pressure. This is an artificial fracturing of the rock (called a "frac") and causes the rock to crack. The crack network is the pathway that the gas uses to get to the wellbore. The first gas to move is the matrix gas (the stuff in the little holes). As the rock starts to feel the pressure difference between it and the surface, the "sorbed" gas breaks free from the organic material in the shale. In most cases only a small amount of the gas in the shale is ever able to flow. Often only about a quarter of the gas that is in the rock will be produced.  (Jun 30, 2009 | post #4)

Geology

Ocean Floor Lines

The lines I was looking at fall into his #1-3. I guess I didn't pick out the lines you were talking about. It isn't a matter of disagreeing, it is a matter of looking at the same thing.  (Jun 28, 2009 | post #6)

Geology

Ocean Floor Lines

Yes, faults. You will see innumerable configurations. Sea floor spreading faults on the scale you are looking at in the maps, by definition, are not seen on land.  (Jun 26, 2009 | post #4)

Geology

Ocean Floor Lines

Simple preservation of the transverse faults associated with the mid atlantic ridge complex. Picture the sea floor spreading out from the ridge. Not all sections of the ridge move outward at the same speed or time. These long lines are the remnants of the earlier larger faults. Note how they become obscured as the sediment covers them closer to the continents.  (Jun 22, 2009 | post #2)

Geology

Road Cuts Expose Deep History

Yes, every rock tells a story... such a pity that most of them are incredibly boring. ;-)  (Jun 16, 2009 | post #3)

Geology

Look for low-level flights locally

You don't need to fly to do that. Heck... you can use Google Earth for that. High resolution, multispectral images are far cheaper than flying. "were <sic> not stupid" A problem with being stupid is that you aren't smart enough to assess that.  (May 15, 2009 | post #13)

Geology

Look for low-level flights locally

It is a large grid. Just email the USGS and ask for infomation on the survey and the grid size. It is just aeromag and/or gravity. People need to chill out.  (May 10, 2009 | post #9)

Geology

Look for low-level flights locally

The expertise and equipment is in Canada. We just don't do it all that much in the US whereas they do it all the time. The Canadians use plenty of our human and equipment resource in return.  (May 10, 2009 | post #5)

Geology

Most scientists agree global warming occurs, human involv...

GW is proven. AGW is in doubt.  (May 8, 2009 | post #26)

Geology

Neb. grad students to compete for barrel award

The Barrel Award is sponsored by the local societies or, in the case of non-US locations, the AAPG Region management.Several of us have been pushing to get Regions to put the time and effort in to get sponsorship and run the local/Regional events. It is quite strong in Canada (I believe Memorial University won this year's Canada region). I believe the UK sponsored a competition last year, and Africa as well. There is no telling why the data sets were withdrawn in 1999. Maybe they had no way to get you to the finals if you won, or maybe they deemed there wasn't enough competition.  (May 5, 2009 | post #2)

Q & A with Nacho Man

Headline:

WEATHER is not CLIMATE

I Belong To:

CSPG, AAPG, SPE, MENSA, Geol Soc. (London), Porsche Club of America, Lotus Owners of South TX.

When I'm Not on Topix:

I'm advising companies and governments... or I'm out on the Ambulance.

Read My Forum Posts Because:

I try to be fair and rational.

I'm Listening To:

my cat hiss

Read This Book:

Introduction to Bayesian Inference and Decision

On My Mind:

Don't pretend to understand Science without having paid attention in school.